In contrast to the marquesa, whose deepest emotional attachment is unreciprocated and thus heightens her alienation even as it holds out the tantalizing hope of acceptance, the narrative frames the twins’ bond as a defense mechanism against isolation. Raised from infancy at the Convent of Santa María Rosa de las Rosas, Manuel and Esteban grow up profoundly silent, inventing a secret language to communicate exclusively with one another. This intense, insular relationship underscores their profound alienation from a society where their ambiguous parentage and lack of wealth leave them without a defined place or inherent status. The secret language protects them from a society that demands conformity, allowing the brothers to exist entirely within their shared identity.

However, their connection to one another is also a burden, as evidenced by their “curious shame in regard to their resemblance” and their distress when asked to share their secret language (32). The reaction is in part a continued response to the world’s ostracism—their resemblance, the narrator remarks, is “the subject of continual comment and joking” (32)—but it also speaks to the nature of the bond itself. By framing their devotion as a “oneness” that swallows individuality, the text continues its exploration of the line between love and self-love, developing the theme of The Imperfect and Redemptive Nature of Love. Their codependent attachment provides meaning and helps them to survive, yet it simultaneously renders both individuals defenseless when external desires eventually threaten the exclusivity of that bond.

Written correspondence—Manuel’s work as a scribe for Camila Perichole— catalyzes the destruction of the brothers’ shared identity by introducing a competing external attachment into their closed world. The documents, love letters, function as a conduit for a passion Manuel experiences but cannot safely actualize, given Camila’s elevated social ambitions and his own humble station as a laborer. For Esteban, however, these dictated messages serve as evidence that he does not wholly share his brother’s inner life. The written word, which previously functioned as their shared livelihood as copyists, suddenly becomes an instrument of division. Indeed, it becomes clear that neither brother fully understands the other, revealing The Inadequacy of Human Judgment even in a relationship described as near telepathic. Esteban interprets Manuel’s infatuation as complete betrayal because, finding everything he seeks in their relationship, there is “no room in his imagination for a new loyalty” (34); meanwhile, Manuel, who knows that his devotion to Esteban remains intact struggles to “understand why Esteban’s misery should present itself as demanding a choice between him and the Perichole” but nevertheless hastens to renounce the actress in an effort to preserve their fraternal bond (38).

Manuel’s subsequent illness and delirium strip away the brothers’ unspoken understanding, revealing the destructive undercurrents of their connection. Although Manuel swears on a crucifix during lucid intervals that “it’s just the foolish words when [he’s] dreaming because of the pain” (42), the outburst in which he accuses Esteban of coming between him and Camila exposes a suppressed truth. The physical infection mirrors the festering emotional wound caused by Manuel’s sacrifice of his romantic desires and the subsequent avoidance of the topic; their near-telepathic silence, previously a reliable source of unity, has become a form of denial. More broadly, Manuel’s delirious accusations articulate a deep resentment regarding the suffocating nature of their codependency that neither brother could acknowledge while healthy. This breakdown in their private communication further emphasizes the inherent limitations of knowing another person.

It is his newfound knowledge of this impossibility, not merely the shock and grief of Manuel’s death, that leaves Esteban so utterly unmoored afterward. Esteban wanders the Peruvian provinces in despair, briefly assumes his dead brother’s identity to mask his grief, and ultimately prepares to hang himself in a Cuzco inn. Captain Alvarado, a renowned seafarer who traverses the globe to cope with the loss of his own daughter, bursts through the door to stop the suicide as Esteban collapses, crying, “I am alone, alone, alone” (48). Alvarado does not deny this; instead, he tells Esteban that they must “push on […] as best [they] can” (48). Alvarado represents a pragmatic response to loss and loneliness, urging only forward motion. However, Esteban’s immediate death in the bridge collapse undercuts this narrative of recovery. The arbitrary timing of the catastrophe deepens the theme of The Search for Meaning in a Seemingly Arbitrary World. Just as Esteban finally commits to enduring his isolating grief, the physical severing of the structure abruptly severs his life, emphasizing the unresolved tension between random disaster and the possibility of a divine intention.